/* ============================================
   住密码 CozyCode — 全屋定制品牌官网
   设计语言：现代轻奢 · 克制优雅
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
  --color-primary: #1a1a1a;
  --color-accent: #c8a97e;
  --color-accent-dim: rgba(200, 169, 126, 0.15);
  --color-accent-glow: rgba(200, 169, 126, 0.3);
  --color-bg: #ffffff;
  --color-bg-alt: #f8f6f3;
  --color-bg-dark: #111111;
  --color-text: #2c2c2c;
  --color-text-light: #6b6b6b;
  --color-text-inverse: #e8e4dc;
  --color-border: #e5e0d8;

  --font-cn: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-display: 'Playfair Display', 'Noto Sans SC', serif;

  --max-width: 1200px;
  --header-height: 80px;

  --transition: 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-cn);
  font-weight: 300;
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, select, textarea {
  font-family: var(--font-cn);
  font-size: 15px;
  outline: none;
}

/* ---------- Container ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------- Header / Nav ---------- */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition);
}

.header.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: 0 1px 20px rgba(0,0,0,0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-icon {
  width: 40px; height: 40px;
  object-fit: contain;
}

.logo-text {
  font-size: 20px;
  font-weight: 500;
  color: var(--color-primary);
  letter-spacing: 2px;
  position: relative;
}

.logo-reg {
  font-size: 10px;
  font-weight: 500;
  color: var(--color-accent);
  position: relative;
  top: -8px;
  margin-left: 1px;
}

.logo-sub {
  font-size: 11px;
  color: var(--color-text-light);
  letter-spacing: 3px;
  text-transform: uppercase;
  font-weight: 400;
}

/* Nav */
.nav { display: flex; gap: 36px; }

.nav-link {
  font-size: 14px;
  font-weight: 400;
  color: var(--color-text-light);
  letter-spacing: 1px;
  position: relative;
  padding: 4px 0;
  transition: color var(--transition);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 1.5px;
  background: var(--color-accent);
  transition: width var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 24px; height: 1.5px;
  background: var(--color-primary);
  transition: var(--transition);
}

.menu-toggle.active span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  height: 100vh;
  min-height: 700px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background:
    linear-gradient(135deg, rgba(26,26,26,0.82) 0%, rgba(26,26,26,0.65) 50%, rgba(26,26,26,0.78) 100%),
    linear-gradient(to bottom, rgba(248,246,243,0.3) 0%, rgba(248,246,243,0) 100%);
  background-color: #1a1a1a;
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background:
    radial-gradient(circle at 30% 50%, rgba(200,169,126,0.08) 0%, transparent 50%),
    radial-gradient(circle at 70% 60%, rgba(200,169,126,0.05) 0%, transparent 40%);
  animation: heroGlow 20s ease-in-out infinite;
}

@keyframes heroGlow {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(1%, -0.5%); }
  66% { transform: translate(-0.5%, 1%); }
}

/* Subtle grid pattern */
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(200,169,126,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200,169,126,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding: 0 32px;
}

.hero-eyebrow {
  font-size: 13px;
  letter-spacing: 8px;
  color: var(--color-accent);
  margin-bottom: 28px;
  font-weight: 400;
}

.hero-title {
  margin-bottom: 32px;
}

.hero-title-line {
  display: block;
  font-family: var(--font-cn);
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 300;
  color: #fff;
  line-height: 1.3;
  letter-spacing: 4px;
}

.hero-title-line.accent {
  color: var(--color-accent);
  font-weight: 500;
}

.hero-desc {
  font-size: 17px;
  color: var(--color-text-inverse);
  line-height: 2;
  opacity: 0.8;
  margin-bottom: 48px;
  font-weight: 300;
  letter-spacing: 1px;
}

.hero-actions {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 36px;
  font-size: 15px;
  font-weight: 400;
  letter-spacing: 2px;
  border-radius: 2px;
  transition: all var(--transition);
  cursor: pointer;
  border: 1.5px solid transparent;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background: #b9935a;
  border-color: #b9935a;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(200,169,126,0.35);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.35);
}

.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
}

.btn-full { width: 100%; }

/* Hero scroll indicator */
.hero-scroll {
  position: absolute;
  bottom: 40px; left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  z-index: 2;
}

.hero-scroll span {
  font-size: 11px;
  letter-spacing: 3px;
  color: rgba(255,255,255,0.5);
}

.scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, rgba(200,169,126,0.6), rgba(200,169,126,0));
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.2); }
}

/* ---------- Sections ---------- */
.section {
  padding: 120px 0;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section-dark {
  background: var(--color-bg-dark);
  color: var(--color-text-inverse);
}

.section-header {
  text-align: center;
  margin-bottom: 72px;
}

.section-header.light .section-title { color: #fff; }
.section-header.light .section-subtitle { color: rgba(255,255,255,0.6); }

.section-tag {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 6px;
  color: var(--color-accent);
  margin-bottom: 16px;
  font-weight: 400;
}

.section-title {
  font-family: var(--font-cn);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 400;
  color: var(--color-primary);
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 16px;
  color: var(--color-text-light);
  font-weight: 300;
  letter-spacing: 1px;
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-lead {
  font-size: 20px;
  font-weight: 400;
  line-height: 1.8;
  color: var(--color-primary);
  margin-bottom: 24px;
  letter-spacing: 1px;
}

.about-lead strong { color: var(--color-accent); font-weight: 600; }

.about-text p {
  color: var(--color-text-light);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.about-stats {
  display: flex;
  gap: 48px;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.stat { text-align: center; }

.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 600;
  color: var(--color-accent);
}

.stat-label {
  font-size: 13px;
  color: var(--color-text-light);
  letter-spacing: 1px;
}

.about-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.about-image {
  width: 100%;
  max-width: 420px;
  aspect-ratio: 4/3;
  background: var(--color-bg-alt);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.about-image::before {
  content: '';
  position: absolute;
  top: -16px; left: -16px;
  right: 16px; bottom: 16px;
  border: 1px solid var(--color-accent);
  border-radius: 4px;
  opacity: 0.3;
  z-index: 0;
}

.about-image-photo {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 4px;
  display: block;
}

/* ---------- Services ---------- */
.service-page {
  flex: 0 0 100%;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.service-card {
  background: #fff;
  padding: 48px 36px;
  border-radius: 4px;
  border: 1px solid transparent;
  transition: all var(--transition);
  text-align: center;
}

.service-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.06);
}

.service-icon {
  margin-bottom: 24px;
  display: flex;
  justify-content: center;
}

.service-card h3 {
  font-size: 18px;
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: 12px;
  letter-spacing: 1px;
}

.service-card p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* ---------- Service carousel ---------- */
.service-carousel {
  position: relative;
}

.service-viewport {
  overflow: hidden;
  padding: 12px 0;
}

.service-track {
  display: flex;
  transition: transform 0.4s ease;
}

.service-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border: 1px solid rgba(0,0,0,0.08);
  background: #fff;
  color: var(--color-primary);
  font-size: 24px;
  line-height: 1;
  border-radius: 50%;
  cursor: pointer;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.06);
  transition: all var(--transition);
}

.service-arrow:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.service-prev { left: -48px; }
.service-next { right: -48px; }

.service-arrow:disabled {
  opacity: 0.3;
  cursor: default;
  border-color: transparent;
}

@media (max-width: 1200px) {
  .service-prev { left: 12px; }
  .service-next { right: 12px; }
}

/* ---------- Factory gallery ---------- */
.factory-carousel {
  position: relative;
}

.factory-viewport {
  overflow: hidden;
  padding: 12px 0;
}

.factory-track {
  display: flex;
  transition: transform 0.4s ease;
}

.factory-page {
  flex: 0 0 100%;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.factory-page .case-card {
  cursor: default;
}

.factory-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border: 1px solid rgba(0,0,0,0.08);
  background: #fff;
  color: var(--color-primary);
  font-size: 28px;
  line-height: 1;
  border-radius: 50%;
  cursor: pointer;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.06);
  transition: all var(--transition);
}

.factory-arrow:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.factory-prev { left: -48px; }
.factory-next { right: -48px; }

.factory-arrow:disabled {
  opacity: 0.3;
  cursor: default;
  border-color: transparent;
}

@media (max-width: 1200px) {
  .factory-prev { left: 12px; }
  .factory-next { right: 12px; }
}

/* ---------- Process ---------- */
.process-timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  padding-left: 80px;
}

.process-timeline::before {
  content: '';
  position: absolute;
  left: 36px;
  top: 20px;
  bottom: 20px;
  width: 1px;
  background: linear-gradient(to bottom, var(--color-accent), var(--color-border), var(--color-accent));
}

.process-step {
  position: relative;
  margin-bottom: 56px;
}

.process-step:last-child { margin-bottom: 0; }

.step-number {
  position: absolute;
  left: -80px;
  top: 0;
  width: 72px; height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 600;
  color: var(--color-accent);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 50%;
}

.step-content h3 {
  font-size: 20px;
  font-weight: 500;
  margin-bottom: 8px;
  letter-spacing: 1px;
}

.step-content p {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* ---------- Case Filter ---------- */
.case-filter {
  display: flex;
  gap: 20px;
  align-items: flex-end;
  justify-content: center;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.filter-group label {
  font-size: 13px;
  color: var(--color-text-light);
  letter-spacing: 1px;
}

.filter-group select {
  padding: 12px 40px 12px 16px;
  font-size: 14px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: #fff;
  color: var(--color-primary);
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M3 4.5L6 7.5L9 4.5' stroke='%236b6b6b' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  min-width: 160px;
  transition: all var(--transition);
}

.filter-group select:hover:not(:disabled),
.filter-group select:focus {
  border-color: var(--color-accent);
  outline: none;
}

.filter-group select:disabled {
  background-color: var(--color-bg-alt);
  cursor: not-allowed;
  opacity: 0.6;
}

.filter-reset {
  padding: 12px 24px;
  font-size: 14px;
  color: var(--color-text-light);
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition);
}

.filter-reset:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.case-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--color-text-light);
}

.case-empty p {
  margin-bottom: 24px;
  font-size: 15px;
}

/* ---------- Cases ---------- */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* ---------- 文章 / 知识干货 ---------- */
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.article-card {
  background: #fff;
  border-radius: 4px;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  border: 1px solid rgba(0,0,0,0.05);
  border-top: 3px solid var(--color-accent);
}
.article-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.10);
}

.article-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.article-body {
  padding: 22px 22px 26px;
}
.article-cat {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  padding: 2px 10px;
  border-radius: 2px;
  margin-bottom: 12px;
}
.article-title {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--color-primary);
  margin-bottom: 12px;
  min-height: 54px;
}
.article-excerpt {
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-text-light);
  margin-bottom: 16px;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-light);
}
.article-meta .dot { opacity: 0.5; }

.article-filter {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.article-filter .filter-group select {
  min-width: 160px;
}

/* ===== 知识库：目录树 + 文章列表 布局 ===== */
.kb-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 32px;
  align-items: start;
}
.kb-sidebar {
  position: sticky;
  top: 100px;
  background: #fff;
  border: 1px solid #eee;
  border-radius: 8px;
  padding: 16px 14px;
}
.kb-sidebar-title {
  font-size: 13px;
  font-weight: 700;
  color: #8a6d4b;
  letter-spacing: 1px;
  margin-bottom: 12px;
  padding-left: 4px;
}
.kb-tree, .kb-tree ul { list-style: none; margin: 0; padding: 0; }
.kb-tree ul { margin-left: 14px; border-left: 1px dashed #e0d8cd; padding-left: 8px; }
.kb-tree-node { position: relative; margin: 2px 0; padding-left: 16px; }
.kb-tree-label {
  display: inline-block;
  max-width: calc(100% - 16px);
  padding: 7px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  line-height: 1.35;
  color: #3a3a3a;
  word-break: break-word;
  white-space: normal;
  vertical-align: top;
  transition: background 0.15s, color 0.15s;
}
/* 顶层目录统一加粗，视觉上和子级形成一致的分组标题 */
.kb-tree > li.kb-tree-node > .kb-tree-label { font-weight: 600; }
.kb-tree-label:hover { background: #f5efe7; }
.kb-tree-node.active > .kb-tree-label {
  background: #8a6d4b;
  color: #fff;
  font-weight: 600;
}
/* 树形目录默认折叠：子级 ul 隐藏，仅展开(expanded)的节点显示其下级 */
.kb-tree ul { display: none; }
.kb-tree-node.expanded > ul { display: block; }
.kb-tree-caret {
  position: absolute;
  left: 0;
  top: 10px;
  width: 14px;
  color: #8a6d4b;
  font-size: 11px;
  line-height: 1;
  cursor: pointer;
  user-select: none;
  text-align: center;
  vertical-align: top;
}
.kb-clear {
  border: 1px solid #ddd;
  background: #fff;
  border-radius: 4px;
  padding: 5px 12px;
  cursor: pointer;
  font-size: 13px;
  color: #8a6d4b;
}
.kb-clear:hover { background: #f5efe7; }
.kb-main { min-width: 0; }

/* ===== 文章翻页器 ===== */
.pager {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
}
.pager-btn {
  min-width: 38px;
  height: 38px;
  padding: 0 12px;
  border: 1px solid #e2d9cd;
  background: #fff;
  color: #6b5840;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.15s ease;
}
.pager-btn:hover:not([disabled]) {
  border-color: #8a6d4b;
  color: #8a6d4b;
}
.pager-btn[disabled] {
  cursor: default;
}
.pager-btn[aria-current="page"] {
  background: #8a6d4b;
  border-color: #8a6d4b;
  color: #fff;
  font-weight: 600;
}
.pager-gap {
  color: #b3a48d;
  padding: 0 2px;
  user-select: none;
}
.pager-nav:disabled {
  opacity: 0.45;
}

@media (max-width: 600px) {
  .pager { gap: 6px; margin-top: 28px; }
  .pager-btn { min-width: 34px; height: 34px; padding: 0 9px; font-size: 13px; }
}

@media (max-width: 768px) {
  .kb-layout { grid-template-columns: 1fr; gap: 20px; }
  .kb-sidebar { position: static; }
}

.case-empty-tip {
  text-align: center;
  color: var(--color-text-light);
  padding: 40px 0;
}

@media (max-width: 992px) {
  .article-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .article-grid { grid-template-columns: 1fr; }
  .article-title { min-height: 0; }
}

.case-card {
  aspect-ratio: 4/3;
  border-radius: 4px;
  overflow: hidden;
  cursor: pointer;
  position: relative;
}

.case-card a {
  display: block;
  width: 100%;
  height: 100%;
  text-decoration: none;
  color: inherit;
}

.case-image {
  width: 100%; height: 100%;
  display: flex;
  align-items: flex-end;
  position: relative;
  overflow: hidden;
}

.case-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.case-card:hover .case-image img {
  transform: scale(1.05);
}

/* Gradient placeholders for cases without images */
.case-img-placeholder {
  background: linear-gradient(135deg, #e8e0d5 0%, #d4c9b8 50%, #c8b99a 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  font-size: 14px;
}

.case-overlay {
  width: 100%;
  padding: 32px 28px;
  background: linear-gradient(to top, rgba(26,26,26,0.9) 0%, rgba(26,26,26,0.3) 60%, rgba(26,26,26,0) 100%);
  position: absolute;
  bottom: 0;
  left: 0;
  transform: translateY(20px);
  opacity: 0;
  transition: all var(--transition);
  pointer-events: none; /* 纯装饰：不拦截箭头与卡片点击 */
  z-index: 2;
}

.case-card:hover .case-overlay {
  transform: translateY(0);
  opacity: 1;
}

.case-tag {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  padding: 4px 12px;
  border-radius: 2px;
  margin-bottom: 10px;
  background: rgba(26,26,26,0.5);
}

.case-overlay h4 {
  font-size: 18px;
  font-weight: 500;
  color: #fff;
  margin-bottom: 4px;
}

.case-overlay p {
  font-size: 13px;
  color: rgba(255,255,255,0.65);
}

/* ===== 案例封面轮播（首页卡片 + 详情页封面） ===== */
.slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 38px;
  height: 38px;
  border: none;
  border-radius: 50%;
  background: rgba(26,26,26,0.42);
  color: #fff;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity .25s ease, background .25s ease;
  z-index: 5;
  pointer-events: auto;
}
.slider-arrow:hover { background: var(--color-accent); }
.slider-prev { left: 12px; }
.slider-next { right: 12px; }

.slider-counter {
  position: absolute;
  right: 12px;
  bottom: 12px;
  background: rgba(26,26,26,0.5);
  color: #fff;
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 12px;
  z-index: 5;
  letter-spacing: .5px;
  font-variant-numeric: tabular-nums;
  pointer-events: none; /* 计数标签不拦截点击 */
}

/* 首页/列表卡片：悬停显示箭头；计数器置右上避免与遮罩重叠 */
.case-card:hover .slider-arrow { opacity: 1; }
.case-card .slider-counter { top: 12px; bottom: auto; }

/* 详情页封面：箭头常驻 */
.case-main-image { position: relative; overflow: hidden; }
.case-main-image .slider-arrow { opacity: 1; }
.case-main-image .slider-counter { bottom: 12px; top: auto; }

/* 触屏设备：箭头常驻 */
@media (hover: none) {
  .slider-arrow { opacity: 1; }
}

.case-more {
  text-align: center;
  margin-top: 48px;
}

.case-more .btn-outline {
  color: var(--color-primary);
  border-color: var(--color-border);
}

.case-more .btn-outline:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

/* 列表页：案例计数 */
.cases-count {
  align-self: center;
  margin-left: auto;
  font-size: 13px;
  color: var(--color-text-light);
  white-space: nowrap;
}

/* 列表页：分页 */
.case-pagination {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 48px;
}

.page-btn {
  min-width: 40px;
  height: 40px;
  padding: 0 14px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.25s ease;
}

.page-btn:hover:not(:disabled):not(.active) {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.page-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  cursor: default;
}

.page-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.page-ellipsis {
  color: var(--color-text-light);
  padding: 0 4px;
}

/* ---------- Advantage ---------- */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.advantage-item {
  text-align: center;
  padding: 40px 24px;
}

.adv-icon {
  font-size: 40px;
  margin-bottom: 20px;
}

.advantage-item h3 {
  font-size: 16px;
  font-weight: 500;
  margin-bottom: 12px;
  letter-spacing: 1px;
}

.advantage-item p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.8;
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.contact-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.contact-icon {
  font-size: 24px;
  flex-shrink: 0;
  width: 48px; height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(200,169,126,0.1);
  border-radius: 4px;
}

.contact-item h4 {
  font-size: 15px;
  font-weight: 500;
  color: #fff;
  margin-bottom: 4px;
  letter-spacing: 1px;
}

.contact-item p {
  font-size: 14px;
  color: rgba(255,255,255,0.55);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 14px 18px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 2px;
  color: #fff;
  transition: all var(--transition);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: rgba(255,255,255,0.35);
}

.contact-form select { color: rgba(255,255,255,0.55); }
.contact-form select option { color: var(--color-primary); background: #fff; }

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: var(--color-accent);
  background: rgba(255,255,255,0.1);
  outline: none;
}

.contact-wechat .wechat-qr-inline {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 12px;
}

.contact-wechat .wechat-qr-inline img {
  width: 72px;
  height: 72px;
  border-radius: 4px;
  background: #fff;
  padding: 4px;
  flex-shrink: 0;
}

.contact-wechat .wechat-qr-inline p {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  margin: 0;
}

.contact-map {
  align-items: flex-start;
}

.map-preview-link {
  display: block;
}

.contact-map .map-preview-img {
  width: 50%;
  height: auto;
  border-radius: 4px;
  background: rgba(255,255,255,0.06);
  display: block;
}

.contact-map p {
  margin-top: 10px;
  font-size: 13px;
  color: rgba(255,255,255,0.55);
}

.contact-map a {
  color: var(--color-accent);
  text-decoration: none;
}

.contact-map a:hover {
  text-decoration: underline;
}

/* ---------- Footer ---------- */
.footer {
  background: #0a0a0a;
  color: rgba(255,255,255,0.6);
  padding: 72px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-logo { margin-bottom: 20px; }
.footer-logo .logo-text { color: #fff; }

.footer-brand p {
  font-size: 13px;
  line-height: 2;
  color: rgba(255,255,255,0.4);
}

.footer-links h4 {
  font-size: 14px;
  font-weight: 500;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.footer-links a {
  display: block;
  font-size: 13px;
  color: rgba(255,255,255,0.45);
  margin-bottom: 12px;
  transition: color var(--transition);
}

.footer-links a:hover { color: var(--color-accent); }

.footer-qr {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.qr-placeholder {
  width: 120px; height: 120px;
  background: #ffffff;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.qr-placeholder img {
  width: 100%;
  height: 100%;
  display: block;
}

.footer-qr span {
  font-size: 12px;
  color: rgba(255,255,255,0.35);
}

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.06);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 12px;
  color: rgba(255,255,255,0.25);
}

.footer-bottom a {
  color: rgba(255,255,255,0.25);
  transition: color var(--transition);
}

.footer-bottom a:hover { color: rgba(255,255,255,0.5); }

/* ---------- Scroll Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 968px) {
  .container { padding: 0 24px; }

  .nav {
    position: fixed;
    top: 0; right: -100%;
    width: 280px; height: 100vh;
    background: #fff;
    flex-direction: column;
    padding: 100px 40px 40px;
    gap: 32px;
    transition: right var(--transition);
    box-shadow: -10px 0 40px rgba(0,0,0,0.06);
    z-index: 999;
  }

  .nav.open { right: 0; }

  .menu-toggle { display: flex; }

  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .service-page { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .advantage-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }

  .process-timeline { padding-left: 60px; }
  .step-number { left: -60px; width: 48px; height: 48px; font-size: 18px; }
}

@media (max-width: 600px) {
  .section { padding: 80px 0; }

  .hero-title-line { font-size: 28px; }

  .service-page,
  .case-grid,
  .advantage-grid {
    grid-template-columns: 1fr;
  }

  .about-stats { gap: 28px; flex-wrap: wrap; justify-content: center; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }
  .process-timeline { padding-left: 48px; }
  .process-timeline::before { left: 23px; }
  .step-number { left: -48px; width: 40px; height: 40px; font-size: 16px; }
}

/* ===== 前台登录/注册 + 角色导航 ===== */
.auth-area { display: flex; align-items: center; gap: 8px; }
.auth-btn { padding: 7px 16px; border: 1px solid #c8a97e; background: transparent; color: #c8a97e; border-radius: 20px; cursor: pointer; font-size: 13px; font-family: inherit; transition: .2s; }
.auth-btn:hover { background: #c8a97e; color: #fff; }
.auth-btn.ghost { border-color: #d9d2c6; color: #8a8478; }
.auth-btn.ghost:hover { background: #8a8478; color: #fff; }
.user-area { display: flex; align-items: center; gap: 10px; }
.user-name { font-size: 13px; color: #5a564f; }

.modal-mask { position: fixed; inset: 0; background: rgba(20,18,15,.55); display: flex; align-items: center; justify-content: center; z-index: 999; }
.modal-box { position: relative; background: #fff; padding: 32px 28px; border-radius: 10px; width: 320px; box-shadow: 0 20px 60px rgba(0,0,0,.25); }
.modal-box h3 { margin: 0 0 20px; font-size: 18px; text-align: center; }
.modal-box input { width: 100%; padding: 10px 12px; margin-bottom: 12px; border: 1px solid #ddd; border-radius: 5px; font-family: inherit; font-size: 14px; box-sizing: border-box; }
.modal-close { position: absolute; top: 10px; right: 14px; border: none; background: none; font-size: 22px; line-height: 1; color: #999; cursor: pointer; }
.modal-msg { color: #c0392b; font-size: 13px; min-height: 16px; margin: 6px 0 0; text-align: center; }
.modal-box .link-btn { display: block; margin: 14px auto 0; background: none; border: none; color: #8a6d4b; cursor: pointer; font-size: 13px; }

/* 模态框内 tab / 面板 */
.modal-tabs { display: flex; gap: 6px; margin-bottom: 18px; border-bottom: 1px solid #eee; padding-bottom: 10px; }
.modal-tab { flex: 1; padding: 7px 4px; background: transparent; border: 1px solid #ddd; color: #666; border-radius: 4px; cursor: pointer; font-size: 13px; font-family: inherit; transition: .15s; }
.modal-tab.active { background: #8a6d4b; color: #fff; border-color: #8a6d4b; }
.modal-panel { display: none; }
.modal-panel.active { display: block; }

/* 验证码行 */
.code-row { display: flex; gap: 8px; margin-bottom: 12px; }
.code-row input { flex: 1; margin-bottom: 0; }
.code-btn { flex-shrink: 0; padding: 0 14px; white-space: nowrap; background: #f3eee6; border: 1px solid #ddd; color: #8a6d4b; border-radius: 5px; cursor: pointer; font-size: 13px; font-family: inherit; }
.code-btn:disabled { color: #aaa; cursor: not-allowed; }
.captcha-row { display: flex; gap: 8px; margin-bottom: 12px; align-items: stretch; }
.captcha-row input { flex: 1; margin-bottom: 0; }
.captcha-img { width: 110px; height: 40px; border: 1px solid #ddd; border-radius: 5px; cursor: pointer; background: #f5f1ea; flex-shrink: 0; }

/* 二维码 */
.qr-box { display: flex; align-items: center; justify-content: center; min-height: 180px; margin-bottom: 10px; }
.qr-box img { width: 180px; height: 180px; border: 1px solid #eee; border-radius: 6px; }
.qr-loading { color: #999; font-size: 13px; }
.qr-tip { text-align: center; color: #8a8478; font-size: 13px; margin: 0; }

/* ============================================================
   全站母板组件：左上角返回按钮 + 顶部知识干货搜索栏
   由 assets/site-chrome.js 动态注入，所有页面共用
   ============================================================ */
.header-inner { gap: 18px; }

/* ---- 左上角返回按钮 ---- */
.header-left {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.page-back {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 34px;
  padding: 0 12px 0 9px;
  border: 1px solid var(--color-border, #e4ddd2);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.7);
  color: #7a7266;
  font-family: inherit;
  font-size: 13px;
  letter-spacing: 1px;
  cursor: pointer;
  flex: none;
  transition: all var(--transition, .3s ease);
}
.page-back:hover {
  border-color: #c8a97e;
  color: #8a6d4b;
  background: #fdfaf5;
  transform: translateX(-2px);
}
.page-back svg { flex: none; }

/* ---- 顶部搜索栏 ---- */
.site-search {
  display: flex;
  align-items: center;
  height: 36px;
  padding: 0 4px 0 14px;
  border: 1px solid var(--color-border, #e4ddd2);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.75);
  transition: all var(--transition, .3s ease);
  flex: none;
}
.site-search:focus-within {
  border-color: #c8a97e;
  background: #fff;
  box-shadow: 0 2px 14px rgba(200, 169, 126, 0.16);
}

.site-search-input {
  width: 150px;
  border: none;
  outline: none;
  background: transparent;
  font-family: inherit;
  font-size: 13px;
  color: var(--color-primary, #2b2823);
  letter-spacing: .5px;
  transition: width var(--transition, .3s ease);
}
.site-search-input::placeholder { color: #b3aca1; }
.site-search:focus-within .site-search-input { width: 210px; }
.site-search-input::-webkit-search-cancel-button { -webkit-appearance: none; }

.site-search-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px; height: 28px;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: #8a8478;
  cursor: pointer;
  flex: none;
  transition: all var(--transition, .3s ease);
}
.site-search-btn:hover { background: #c8a97e; color: #fff; }

/* 移动端：默认收成一个放大镜，点开后铺满整行 */
@media (max-width: 968px) {
  .header-inner { gap: 10px; }
  .page-back { padding: 0 10px; }
  .page-back-text { display: none; }

  .site-search {
    border-color: transparent;
    background: transparent;
    padding: 0;
    margin-left: auto;
  }
  .site-search .site-search-input {
    width: 0;
    padding: 0;
    opacity: 0;
    pointer-events: none;
  }
  .site-search:focus-within { box-shadow: none; }

  .site-search.open {
    position: absolute;
    top: calc(var(--header-height, 72px) - 6px);
    left: 24px; right: 24px;
    height: 42px;
    padding: 0 6px 0 14px;
    border: 1px solid #e4ddd2;
    border-radius: 21px;
    background: #fff;
    box-shadow: 0 8px 26px rgba(0, 0, 0, .1);
    z-index: 1002;
  }
  .site-search.open .site-search-input {
    width: 100%;
    opacity: 1;
    pointer-events: auto;
  }
}

/* ============================================================
   搜索结果页 search.html
   ============================================================ */
.search-hero {
  padding: calc(var(--header-height, 72px) + 56px) 0 32px;
  background: var(--color-bg-alt, #faf8f5);
  border-bottom: 1px solid var(--color-border, #ece6dd);
}
.search-hero .section-tag { display: inline-block; margin-bottom: 10px; }
.search-hero h1 {
  font-size: 30px;
  font-weight: 500;
  color: var(--color-primary, #2b2823);
  letter-spacing: 1px;
  margin: 0 0 10px;
}
.search-hero h1 .kw { color: #8a6d4b; }
.search-summary { color: var(--color-text-light, #8a8478); font-size: 14px; margin: 0; }
.search-summary strong { color: #8a6d4b; font-weight: 500; }

/* 大搜索框（结果页正文里的那个） */
.search-bigbox {
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: 560px;
  margin: 22px 0 0;
  padding: 6px 6px 6px 20px;
  border: 1px solid var(--color-border, #e4ddd2);
  border-radius: 28px;
  background: #fff;
}
.search-bigbox:focus-within { border-color: #c8a97e; box-shadow: 0 4px 20px rgba(200,169,126,.15); }
.search-bigbox input {
  flex: 1;
  border: none; outline: none; background: transparent;
  font-family: inherit; font-size: 15px; color: var(--color-primary, #2b2823);
}
.search-bigbox input::placeholder { color: #b3aca1; }
.search-bigbox button {
  flex: none;
  padding: 10px 24px;
  border: none; border-radius: 22px;
  background: #c8a97e; color: #fff;
  font-family: inherit; font-size: 14px; letter-spacing: 2px;
  cursor: pointer; transition: background var(--transition, .3s ease);
}
.search-bigbox button:hover { background: #b3936a; }

/* 分类筛选 chips */
.search-facets { display: flex; flex-wrap: wrap; gap: 8px; margin: 26px 0 4px; }
.facet-chip {
  padding: 6px 15px;
  border: 1px solid var(--color-border, #e4ddd2);
  border-radius: 16px;
  background: #fff;
  color: #7a7266;
  font-family: inherit; font-size: 13px;
  cursor: pointer;
  transition: all var(--transition, .3s ease);
}
.facet-chip:hover { border-color: #c8a97e; color: #8a6d4b; }
.facet-chip.active { background: #8a6d4b; border-color: #8a6d4b; color: #fff; }
.facet-chip .n { opacity: .65; margin-left: 4px; font-size: 12px; }

/* 结果列表 */
.search-results { margin-top: 26px; display: flex; flex-direction: column; gap: 14px; }

.result-item {
  display: block;
  padding: 22px 24px;
  border: 1px solid var(--color-border, #ece6dd);
  border-radius: 8px;
  background: #fff;
  text-decoration: none;
  transition: all var(--transition, .3s ease);
}
.result-item:hover {
  border-color: #d8c7ac;
  box-shadow: 0 8px 28px rgba(0, 0, 0, .06);
  transform: translateY(-2px);
}
.result-crumb {
  font-size: 12px;
  color: #a49c90;
  letter-spacing: .5px;
  margin-bottom: 7px;
}
.result-crumb .sep { margin: 0 6px; opacity: .6; }
.result-title {
  font-size: 17px;
  font-weight: 500;
  color: var(--color-primary, #2b2823);
  line-height: 1.5;
  margin: 0 0 8px;
}
.result-item:hover .result-title { color: #8a6d4b; }
.result-snippet {
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--color-text-light, #77706a);
  margin: 0 0 12px;
}
.result-foot {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 12px;
  color: #a49c90;
}
.result-foot .dot { opacity: .5; }
.result-score {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-left: auto;
}
.result-score .bar {
  width: 62px; height: 4px;
  border-radius: 2px;
  background: #efe9e0;
  overflow: hidden;
}
.result-score .bar i {
  display: block; height: 100%;
  background: linear-gradient(90deg, #d8c19b, #b3936a);
  border-radius: 2px;
}

/* 关键词高亮 */
.search-results mark,
.search-hero mark {
  background: #f6e7cd;
  color: #8a5a20;
  padding: 0 2px;
  border-radius: 2px;
}

/* 空状态 */
.search-empty {
  padding: 60px 24px;
  text-align: center;
  border: 1px dashed var(--color-border, #e4ddd2);
  border-radius: 8px;
  background: #fff;
}
.search-empty h3 { font-size: 17px; font-weight: 500; color: var(--color-primary, #2b2823); margin: 0 0 10px; }
.search-empty p { color: var(--color-text-light, #8a8478); font-size: 14px; margin: 0 0 20px; }
.search-suggest { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.search-suggest a {
  padding: 6px 15px;
  border: 1px solid var(--color-border, #e4ddd2);
  border-radius: 16px;
  font-size: 13px;
  color: #7a7266;
  transition: all var(--transition, .3s ease);
}
.search-suggest a:hover { border-color: #c8a97e; color: #8a6d4b; background: #fdfaf5; }

@media (max-width: 600px) {
  .search-hero h1 { font-size: 23px; }
  .search-bigbox { padding-left: 16px; }
  .search-bigbox button { padding: 10px 16px; letter-spacing: 1px; }
  .result-item { padding: 18px 16px; }
  .result-score { width: 100%; margin: 8px 0 0; }
}